The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 1991
Filed:
Mar. 15, 1990
Shigeki Sato, Kanagawa, JP;
Nissan Motor Company, Ltd., , JP;
Abstract
A vibration damping device disposed between a vibrating body such as an internal combustion engine and a base such as a vehicular chassis, comprises an accelerometer which is mounted on the vibrating body and detects an acceleration in the vertical direction of the vibrating body, and a control unit which controls the viscosity of rheopectic fluid within a flow restricting member disposed in the damping device in response to an acceleration signal from the accelerometer. The control unit operates in such a manner that, when the control unit receives an acceleration signal whose value is smaller than a preset value, voltage is applied to the electrodes disposed in the flow restricting member and as a result the dynamic damping effect is gained. Further the control unit operates in such a manner that, when the control unit receives a signal whose value is equal to or larger than the preset value, no voltage is applied to the electrodes and as a result the relationship between the damping force and the spring force is varied from a state in which they act in the same direction to one in which they act in opposite directions rapidly.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile